NEX 7 ... Nikon D800E

Sent my D800E back for repair today. Focus issues. Could not get the same AF sharpness shooting the N7, Sig 30 and the D800E and 50mm, F1.4 AFD, same settings, same subject. The N7 was tack sharp!! The D800E was mushy. Point being? IF ... I had viable AF native "E" lens options, I would dump Nikon and shoot Sony, (at 1/3rd of the cost!!!).
KarlT